/**
 * 
 */
package test;

/**
 * @author zhong
 *
 */
public class tttt {

	/**
	 * @param args
	 */
	public static void main(String[] args) {
		// int key = 1;
		// int curKeys = 1;
		// curKeys |= (1 << key);
		// System.out.println(curKeys);
		int i = -4;
		System.out.println(i % 5);
	}

}
